From: Lulu Cheng <chenglulu@loongson.cn>
Date: Mon, 3 Nov 2025 09:53:52 +0000 (+0800)
Subject: LoongArch: Fix PR122097 (2).
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fheads%2Fmaster;p=thirdparty%2Fgcc.git

LoongArch: Fix PR122097 (2).

r16-4703 does not completely fix PR122097.  Floating-point vectors
were not processed in the function loongarch_const_vector_same_bytes_p.
This patch will completely resolve this issue.

	PR target/122097

gcc/ChangeLog:

	* config/loongarch/loongarch.cc
	(loongarch_const_vector_same_bytes_p): Add processing for
	floating-point vector data.
---

diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc
index 462743f8399..b558efde4c7 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -1835,7 +1835,27 @@ loongarch_const_vector_same_bytes_p (rtx op, machine_mode mode)
 
   first = CONST_VECTOR_ELT (op, 0);
   bytes = GET_MODE_UNIT_SIZE (mode);
-  val = INTVAL (first);
+
+  if (GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT)
+    {
+      rtx val_s = CONST_VECTOR_ELT (op, 0);
+      const REAL_VALUE_TYPE *x = CONST_DOUBLE_REAL_VALUE (val_s);
+      if (GET_MODE (val_s) == DFmode)
+	{
+	  long tmp[2];
+	  REAL_VALUE_TO_TARGET_DOUBLE (*x, tmp);
+	  val = (unsigned HOST_WIDE_INT) tmp[1] << 32 | tmp[0];
+	}
+      else
+	{
+	  long tmp;
+	  REAL_VALUE_TO_TARGET_SINGLE (*x, tmp);
+	  val = (unsigned HOST_WIDE_INT) tmp;
+	}
+    }
+  else
+    val = UINTVAL (first);
+
   first_byte = val & 0xff;
   for (i = 1; i < bytes; i++)
     {